http://plugins.jquery.com/project/loading
If you need to let the user know something is happening in the
background, this is the easiest way. It handles creation,
positioning, masking/blocking stuff behind, and even "pulsing" the
loading message with a few simple options. Of course, there's more
than a few options. Everything is configurable and extensible. It's
even easy to create your own pulsing/spinning/throbbing effects, and
it can display text (default), images or any element you like with
ease and simplicity. It works page-wide with a "static" call:
$.loading(true, {mask:true})
or per-element, with chaining and all:
$('#foo').loading({ align:'center' })
The best way to start seeing what can be done and how to use it is to
play with the demo:
http://jquery-values.googlecode.com/svn/other/loading/jquery.loading.htm
Enjoy. And if you find bugs or have more clever ideas for it, let me
know. I like feedback of all kinds.
